Pinout Values and Diagnostic Parameters

AIR CONDITIONING SYSTEM:

TERMINALS OF ECU





1. CHECK AIR CONDITIONING AMPLIFIER
(a) Measure the voltage and resistance of the connectors.

HINT: Check from the rear of the connector while it is connected to the air conditioning amplifier.

Waveform 1:

(b) Using an oscilloscope, measure the waveform 1.





HINT: When the blower level is increased, the duty ratio changes accordingly.